Radiation response of transition metals-doped lithium aluminate crystals

Yutaka Fujimoto, Takayuki Yanagida, Kei Kamada, Jan Pejchal

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Basic radiation response properties of lithium aluminate LiAlO2 crystals activated with transition metals like Ti, Mn and Cu were examined. When X-ray excited the crystals, intense emission peaks were observed at visible wavelength regions, they are ascribed to the Ti4+ charge transfer (Ti-doped), Mn2+ 3d5-3d5 (Mn-doped) and Cu + 3d94s-3d10 (Cu-doped) transitions. The scintillation decay times were estimated to be about 1.8 μs (93 %) and 9.9μs (7 %) for the Ti-doped crystal, 310 μs (96 %) and 2220 μs (4 %) for Mn-doped one, and 3.6 μs (52 %) and 19.6 μs (48 %) for Cu-doped one, respectively. In the 252Cf neutron irradiated pulse height spectra, Ti- and Cu- doped crystals showed higher light yield in comparison to that of GS20 commercial scintillator.

Original languageEnglish
Title of host publication2013 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2013
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Print)9781479905348
DOIs
Publication statusPublished - 2013 Jan 1
Event2013 60th IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2013 - Seoul, Korea, Republic of
Duration: 2013 Oct 272013 Nov 2

Publication series

NameIEEE Nuclear Science Symposium Conference Record
ISSN (Print)1095-7863

Other

Other2013 60th IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2013
CountryKorea, Republic of
CitySeoul
Period13/10/2713/11/2

ASJC Scopus subject areas

  • Radiation
  • Nuclear and High Energy Physics
  • Radiology Nuclear Medicine and imaging

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  • Cite this

    Fujimoto, Y., Yanagida, T., Kamada, K., & Pejchal, J. (2013). Radiation response of transition metals-doped lithium aluminate crystals. In 2013 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2013 [6829660] (IEEE Nuclear Science Symposium Conference Record). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/NSSMIC.2013.6829660